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<Title>Data Table (2)</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1">Data Table (2)</p>
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<img src="images/datatable2.png" width='600' height='400'>
<br><br>
This example demonstrates putting a data table under the x-axis and extend it with additional computed values.<br><br>
Similar to the previous example <a href="datatable.htm">Data Table (1)</a>, in this example, <a href="Axis.makeLabelTable.htm">Axis.makeLabelTable</a> is used to convert the axis labels to a table. The returned <a href="CDMLTable.htm">CDMLTable</a> object is used to add more content to the table and to configure the appearance of the table.<br><br>
<ul><li> 3 rows are added to the table using <a href="CDMLTable.appendRow.htm">CDMLTable.appendRow</a>. The first 2 rows are used to display the data values of the two data series. The last row is used to display the percentage differences between the data values. <a href="cdml.htm">CDML</a> is used in the last row to format the texts, so that they are green for positive values, and red for negative values.<br><br>
<li> A column is added to the left of the table using <a href="CDMLTable.insertCol.htm">CDMLTable.insertCol</a>, showing the title for the rows.<br><br>
<li> The icons for the data sets are obtained using <a href="Layer.getLegendIcon.htm">Layer.getLegendIcon</a>. Note that the icons are represented as <a href="cdml.htm">CDML</a>, so they can be mixed with other text. In this example, the icons are appended with the names of the data sets.<br><br>
<li> A column is added to the right of the table using <a href="CDMLTable.appendCol.htm">CDMLTable.appendCol</a> to show the total values and their percentage difference.</ul>
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<p class="heading1a">Source Code Listing</p>
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<b>[JSP Version]</b> jspdemo/datatable2.jsp
<div class='codeblock'><code class='pre'>&lt;%@page import="ChartDirector.*, java.util.*" %&gt;
&lt;%
// The data for the line chart
double[] data0 = {410, 420, 500, 590};
double[] data1 = {500, 370, 680, 850};
String[] labels = {"Q1", "Q2", "Q3", "Q4"};

// Create a XYChart object of size 600 x 400 pixels
XYChart c = new XYChart(600, 400);

// Add a title to the chart using 18pt Times Bold Italic font
TextBox title = c.addTitle("Product Line Global Revenue", "Times New Roman Bold Italic", 18);

// Tentatively set the plotarea at (50, 55) and of (chart_width - 100) x (chart_height - 150) pixels
// in size. Use a vertical gradient color from sky blue (aaccff) t0 light blue (f9f9ff) as
// background. Set both horizontal and vertical grid lines to dotted semi-transprent black
// (aa000000).
PlotArea plotArea = c.setPlotArea(50, 55, c.getWidth() - 100, c.getHeight() - 150,
    c.linearGradientColor(0, 55, 0, 55 + c.getHeight() - 150, 0xaaccff, 0xf9fcff), -1, -1,
    c.dashLineColor(0xaa000000, Chart.DotLine), -1);

// Set y-axis title using 12 points Arial Bold Italic font, and set its position 10 pixels from the
// axis.
c.yAxis().setTitle("Revenue (USD millions)", "Arial Bold Italic", 12);
c.yAxis().setTitlePos(Chart.Left, 10);

// Set y-axis label style to 10 points Arial Bold and axis color to transparent
c.yAxis().setLabelStyle("Arial Bold", 10);
c.yAxis().setColors(Chart.Transparent);

// Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the guideline
// when putting ticks on the y-axis.
c.yAxis().setTickDensity(30);

// Add a bar layer to the chart with side layout
BarLayer layer = c.addBarLayer2(Chart.Side);

// Add two data sets to the bar layer
layer.addDataSet(data0, 0xff6600, "FY 2007");
layer.addDataSet(data1, 0x0088ff, "FY 2008");

// Use soft lighting effect with light direction from the left
layer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));

// Set the x axis labels
c.xAxis().setLabels(labels);

// Convert the labels on the x-axis to a CDMLTable
CDMLTable table = c.xAxis().makeLabelTable();

// Set the default left/right margins to 5 pixels and top/bottom margins to 3 pixels. Set the
// default font size to 10 points
TextBox cellStyle = table.getStyle();
cellStyle.setMargin2(5, 5, 4, 3);
cellStyle.setFontSize(10);

// Set the first row to use Arial Bold font, with a light grey (eeeeee) background.
TextBox firstRowStyle = table.getRowStyle(0);
firstRowStyle.setFontStyle("Arial Bold");
firstRowStyle.setBackground(0xeeeeee, Chart.LineColor);

//
// We can add more information to the table. In this sample code, we add the data series and the
// legend icons to the table.
//

// Add 3 more rows to the table. Set the background of the 2nd row to light grey (eeeeee).
table.appendRow();
table.appendRow().setBackground(0xeeeeee, Chart.LineColor);
table.appendRow();

// Put the values of the 2 data series in the first 2 rows. Put the percentage differences in the
// 3rd row.
for(int i = 0; i &lt; data0.length; ++i) {
    table.setText(i, 1, String.valueOf(data0[i]));
    table.setText(i, 2, String.valueOf(data1[i]));

    double percentageDiff = 100.0 * (data1[i] - data0[i]) / data0[i];

    // Use red or green color depending on whether the difference is positive or negative
    String formatString = "&lt;*color=008800*&gt;+{value|1}%";
    if (percentageDiff &lt; 0) {
        formatString = "&lt;*color=cc0000*&gt;{value|1}%";
    }
    table.setText(i, 3, c.formatValue(percentageDiff, formatString));
}

// Insert a column on the left for the legend icons using Arial Bold font.
table.insertCol(0).setFontStyle("Arial Bold");

// The top cell is set to transparent, so it is invisible
table.getCell(0, 0).setBackground(Chart.Transparent, Chart.Transparent);

// The next 2 cells are set to the legend icons and names of the 2 data series
table.setText(0, 1, layer.getLegendIcon(0) + "  FY 2007");
table.setText(0, 2, layer.getLegendIcon(1) + "  FY 2008");

// The last cell is set to "Change"
table.setText(0, 3, "Change");

// Append a column on the right for the total values.
table.appendCol();

// Put "Total" in the top cell as the heading of this column
table.setText(table.getColCount() - 1, 0, "Total");

// The next two cells are the total of the data series
double total0 = new ArrayMath(data0).sum();
double total1 = new ArrayMath(data1).sum();
table.setText(table.getColCount() - 1, 1, String.valueOf(total0));
table.setText(table.getColCount() - 1, 2, String.valueOf(total1));

// The last cell is the percentage differences of the total
double totalPercentageDiff = (total1 - total0) / total0 * 100;

// Use red or green color depending on whether the difference is positive or negative
String totalFormatString = "&lt;*color=008800*&gt;+{value|1}%";
if (totalPercentageDiff &lt; 0) {
    totalFormatString = "&lt;*color=cc0000*&gt;{value|1}%";
}
table.setText(table.getColCount() - 1, 3, c.formatValue(totalPercentageDiff, totalFormatString));

//
// We now demonstrate how to adjust the plot area positions, to allow space for the newly inserted
// left and right columns in the table.
//

// We layout the axis first in order to get the axis metrics (including table metrics)
c.layoutAxes();

// If the first column is wider than the left y-axis, we need to reserve for some left margin to
// ensure the first column stays within the chart.
int leftMargin = 0;
if (table.getColWidth(0) &gt; c.yAxis().getThickness()) {
    leftMargin = table.getColWidth(0) - c.yAxis().getThickness();
}

// Similarly, we need to reserve some right margin for the last column
int rightMargin = table.getColWidth(table.getColCount() - 1);

// Adjust the plot area size, such that the bounding box (inclusive of axes) using the given left
// and right margin, plus 2 more pixels. Put the plot area 10 pixels below the title and use 2
// pixels as the bottom margin. from the left, right and bottom edge, and is just under the legend
// box.
c.packPlotArea(leftMargin + 2, title.getHeight() + 10, c.getWidth() - 3 - rightMargin, c.getHeight()
     - 3);

// After determining the exact plot area position, we may adjust title position so that it is
// centered relative to the plot area (instead of the chart)
title.setPos(plotArea.getLeftX() + (plotArea.getWidth() - title.getWidth()) / 2, title.getTopY());

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "",
    "title='Revenue in {xLabel} {dataSetName}: US$ {value}M'"));
%&gt;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Data Table (2)&lt;/title&gt;
    &lt;!-- Include ChartDirector Javascript Library to support chart interactions --&gt;
    &lt;script type="text/javascript" src="cdjcv.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body style="margin:5px 0px 0px 5px"&gt;
    &lt;div style="font:bold 18pt verdana;"&gt;
        Data Table (2)
    &lt;/div&gt;
    &lt;hr style="border:solid 1px #000080; background:#000080" /&gt;
    &lt;div style="font:10pt verdana; margin-bottom:1.5em"&gt;
        &lt;a href="viewsource.jsp?file=&lt;%=request.getServletPath()%&gt;"&gt;View Source Code&lt;/a&gt;
    &lt;/div&gt;
    &lt;!-- ****** Here is the chart image ****** --&gt;
    &lt;%= viewer.renderHTML(response) %&gt;
&lt;/body&gt;
&lt;/html&gt;</code></div>
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